Barrus Reports Mercury at 54% of Southampton Open-Display Engines

A show-floor snapshot of propulsion choices

Barrus released the figures on 1 October following the close of the 2026 Southampton International Boat Show. Its count places Mercury above half of the engines visible in the show's main open display areas and Yanmar at the largest share of installed inboards counted by the distributor.

These are show-display figures rather than national sales-registration data, so they should be read as a snapshot of the boats presented at Southampton rather than a complete measure of the UK market. Even with that limitation, the mix is useful because boat shows bring together many builders, dealers and propulsion packages in one place.

Outboards continue to dominate many smaller leisure boats

Mercury's reported 54% share of engines in the main open display areas reflects the importance of outboard propulsion across dayboats, fishing boats, RIBs and compact family cruisers. Modern outboards simplify installation for many builders and free interior volume that would otherwise be occupied by inboard machinery and associated systems.

Owners should not choose an engine solely because it appears frequently at a show, since the right package depends on hull design, permitted horsepower, weight, fuel use and local service support. A common engine brand can nevertheless improve access to dealers and parts, which becomes important when a boat is used away from its home marina.

Yanmar led Barrus's count of installed inboards

Barrus also reported that Yanmar represented 40.5% of the inboard engines installed in boats on display. Small diesel inboards remain particularly relevant to sailing yachts and displacement or semi-displacement craft where fuel efficiency, charging capability and protected machinery installation are valued more highly than the packaging benefits of an outboard.

The inboard figure should be interpreted using the same caution as the outboard count because it reflects a particular exhibition and display mix. Some brands, boat types or dealers may be over- or under-represented compared with annual UK registrations, so the result is best used as evidence of show presence rather than a definitive market-share table.

What the figures tell leisure-boat buyers

For buyers walking a major show, propulsion concentration can influence the practical comparisons available on the same day. Seeing multiple installations of the same engine family makes it easier to examine rigging quality, helm controls, access for servicing and how different builders solve noise, ventilation and weight-distribution challenges.

The Barrus figures also underline why engine choice should be considered alongside the boat rather than after it. Leisure Boat Guide recommends comparing warranty terms, dealer coverage, service intervals and the exact installed package, because two boats using engines from the same manufacturer can still differ substantially in integration and ownership experience.

Official sources: barrus.co.uk.